12132154121 has 8 divisors (see below), whose sum is σ = 12150542664. Its totient is φ = 12113781120.

The previous prime is 12132154081. The next prime is 12132154127. The reversal of 12132154121 is 12145123121.

12132154121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 407595721 + 11724558400 = 20189^2 + 108280^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12132154121 - 2²⁶ = 12065045257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12132154127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3356111 + ... + 3359723.

It is an arithmetic number, because the mean of its divisors is an integer number (1518817833).

Almost surely, 2^12132154121 is an apocalyptic number.

It is an amenable number.

12132154121 is a deficient number, since it is larger than the sum of its proper divisors (18388543).

12132154121 is a wasteful number, since it uses less digits than its factorization.

12132154121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771.

The product of its digits is 480, while the sum is 23.

Adding to 12132154121 its reverse (12145123121), we get a palindrome (24277277242).

The spelling of 12132154121 in words is "twelve billion, one hundred thirty-two million, one hundred fifty-four thousand, one hundred twenty-one".